std::vector::at

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C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++0x feature) Atomic operations library (C++0x feature) Thread support library (C++0x feature)
Containers library
array (C++0x feature) vector deque forward_list (C++0x feature) list set multiset map multimap unordered_set (C++0x feature) unordered_multiset (C++0x feature) unordered_map (C++0x feature) unordered_multimap (C++0x feature) stack queue priority_queue
std::vector
Member functions vector::vector vector::~vector vector::operator= vector::assign vector::get_allocator Element access vector::at vector::operator[] vector::front vector::back vector::data Iterators vector::begin vector::cbegin (C++0x) vector::end vector::cend (C++0x) vector::rbegin vector::crbegin (C++0x) vector::rend vector::crend (C++0x) Capacity vector::empty vector::size vector::max_size vector::reserve vector::capacity vector::shrink_to_fit Modifiers vector::clear vector::insert vector::emplace vector::erase vector::push_back vector::emplace_back vector::pop_back vector::resize vector::swap

​reference       at( size_type pos );​
​const_reference at( size_type pos ) const;​

Returns a reference to the element at specified location pos. Bounds checking is performed, exception of type out_of_range will be thrown on invalid access.

Contents 1 Parameters 2 Return value 3 Complexity 4 See also

Parameters

pos

-

position of the element to return

Return value

reference to the requested element

Complexity

constant

See also

operator[]	access specified element (public member function)